Probably best to de-install and then re-install to make sure everything is clean. Look in the manual under Oracle Locator (not real intuitive right?) - B.1 Installing and Deinstalling Locator or Spatial Manually

You dont say what a fully patched production system is 11.2.0.3.x ? (opatch lsinventory -detail please when you open the SR)

Just to remind us.....

This function returns the string 'TRUE' if the WKT description is valid. If the WKT description is invalid, this function returns a string in the format 'FALSE (<position-number>)', where <position-number> is the number of the character position in the WKT description where the first error occurs.

The WKT description is checked to see if it satisfies the requirements described in Section 6.8.1.1.

Examples

The following example validates the WKT description of the coordinate system associated with SRID 81989000. The results show that the cause of the invalidity (or the first cause of the invalidity) starts at character position 181 in the WKT description. (SRID 81989000 is not associated with any established coordinate system. Rather, it is for a deliberately invalid coordinate system that was inserted into a test version of the MDSYS.CS_SRS table, and it is not included in the MDSYS.CS_SRS table that is shipped with Oracle Spatial.)